Hoisting-machine



(No Model.)

G. G. MURRBY. HOISTING MACHINE.

Alfo. 512,258. 'Patented Jan. 2, 1894.

UNiTE'TATEs Arnia GEORGE C. MURREY, OF SEATTLE, WASHINGTON.

HOISTING-*NlACI-HNE.

SPECIFICATION, forming part of Letters Patent No. 512,258, dated January2, 1894.

Application filed September 22, 1892. Renewed December 12, 1893. SerialNo. l193,506. (No model.)

.To all whom, it may concern:

Be it known that I, GEORGE C. MURREY, a cltizen of theUnited States,residing at Seattle, in the county of King and State of Vashington, haveinvented certain new and useful lmprovements in Hoisting-Machines; and Ido declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the artto which itappertainsto make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention relates to an improvement inthat class of hoistingmachines usedl to operate pile drivers and similar machinery.

My object is to produce a device which may be quickly started andstoppedand one which will occupyr as small a space as possible.

To this end myinvention consists of certain novel features andcombinations of parts more fully described hereinafter and pointed outin the claim.

Referring to the accompanying drawings: Figure 1 represents a sideelevation; Fig. 2 a longitudinal section; Fig. 3 a detail of the drumshifting mechanism.

The reference letter ct represents the foundation timbers to which thebed plate b, of

my machine is secured by bolts, pins, or in any other convenient manner.Arising from the bed plate b, are two pedestals or standards c and cthoroughly ribbed to insure strength and having the shaft d, immovablykeyed in the openings or boxes e, formed midway their length. The shaftd has mounted on it the hoisting drum f, and gear wheels g and h, all ofwhich revolve loosely thereon. Journaled in the highest portion ofthestandard c and in the overhanging end of the standard c, is a shaftc' to which is imparted a continuous rotary motion by means of the crankdisk i and wrist pin 2 to which pin the engine pitman is connected.Mounted on the shaft 1I are two pinions 3 and 4 the former, is, beingmounted between the shaft bearings and theA pinion 4 being fixed to thatend of the shaft which projects beyond the bearing in the Standard c.

The pinion 4 is adapted to mesh with the internal gear g which is ashereinbefore stated mounted loosely on the shaft (Z, and heldinis anannular friction platey` which is adapted to operatein conjunction withthe slightly concave face j of the hoisting drum f.

The spur gear h is as the internal gear mounted loosely on the shaft d,and held ina Iixed position by means of the set collars h2, one oneither side. This gear meshes with the pinion 3 and by its means it isgiven a continuous rotary movement such movement necessarily being in adirection opposite to that of the internal gear g. The gear h, is alsoprovided with africtiou face h similar to that on the gear g and it isembraced by the concave end h2 of the hoisting drum.

Formed on one end of the hoisting drum, preferably the right hand end,is a countersunk recess 7c into which fits a ring lo of a size equal tothat of the-recess. Securely fastened over the opening and ring isaplate or cap Z2, having a central opening to admit the shaft d. Thering Zo has securely fastened therein the bar 7a2-formed with an opening7c3 p in its center. This bar is adaptedto reciprocate longitudinally inthe elongated opening Z, formed in the shaft CZ, and is secured in thering '7c' by inserting said opening when the ring is in place and thenmoving the ring up and over it, whereupon it may be fastened by means ofthe screws Z. Formed in the center of the shaft eZ and extendinglongitudinally therewith is a passage rml which projects up into theshaft until it comes up with the opening Z. In this passage is locatedthe clutch operatin g red or bar n, which extends through the same andis connected to the bar k2 by means of the opening les formed therein.The remaining end of the bar n, projects out beyond the shaft d, and isconnected to the operating lever o.

To use my improved machine the pinion shaft t' is set in operation whichwill in turn cause the gears g and h, owing to their peculiararrangement, to revolve in opposite directions as explained before. Thedrum j", assuming that it is in the position shown by the drawings, willhowever remain at a stand still, until it is moved laterally on theshaft CZ, when its concave end will come into en- IOC gagement with thecorresponding convex face of the gear g or h, as the case may be, forexample say g. This movement will cause the drum to revolve in thedirection that the gear g is revolving, as the two /are by means of theclutch clamped together. To reverse the drum it is shifted on its shaftto the gear h, to which it will be connected by means of the clutchbefore described. The drum is stopped by moving it such a distance fromboth of the gears g and h, that it will engage neither of them at whichpoint it necessarily remains stationary. Y

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

In a hoisting machine, the combination of a stationary shaft, a drummounted thereon, a gear wheel mounted vat cach end of the drum, frictionplates fixed to the gears, on the side adjacent to the drum a revolvingshaft havlng plnlons mounted thereonand meshing ring, a bar extendingthrough the first named passage and connected to the ring, and anoperating lever attached to the bar, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

GEORGE C. MURREY.

Witnesses:

GEO. H. KING, ARTHUR I. FoNDA.

